The slamming acoustic of a vehicle door is objectively not associated to the inherent character of the automobile however it is associated to the inherent structure of the vehicle door, which is an vital subjective performance to evaluate the vehicle. Vehicle exterior noise is the air borne noise created by this structural vibration in the slamming event. This paper investigates the effect of discretized transfer paths on the abnormal vibration and adapts a modified door structure to reduce its vibration in the door slamming event based on a transfer path analysis (TPA) approach. The total number of discretized transfer paths has been chosen as 3, 5, 7, 9, and 11, i.e., this corresponds to Case 1, 2, 3, 4, and 5, respectively. Based on bench tests and lab experiments, frequency response functions (FRF) and responses of reference points and target points corresponding the aforementioned five cases are obtained. Then transient impact loads of excitation points are calculated based totally on the TPA method. Results exhibit that the model with a larger number of discretized transfer paths could provide more transfer information from the excitation source to the target and has larger root mean square errors (RMSE) between the simulation outcomes and experimental record. However, the model with a larger number of transfer paths will be time-consuming for experiments. In addition, a modified design of the glass run channel rear is implemented and the magnitude of the FRFs between the excitation point and the target has been dramatically decreased. Based on the modified design all transfer paths’ contributions have been decreased.

车门砰砰声客观上与汽车的内在特性无关，而与车门的内在结构有关，是评价车辆的重要主观性能。车辆外部噪声是在撞击事件中由这种结构振动产生的空气传播噪声。本文研究了离散传递路径对异常振动的影响，并基于传递路径分析 (TPA) 方法采用改进的门结构来减少门砰击事件中的振动。离散传输路径的总数选择为 3、5、7、9 和 11，即这分别对应于案例 1、2、3、4 和 5。基于台架测试和实验室实验，得到了上述五种情况对应的频率响应函数（FRF）和参考点和目标点的响应。然后完全基于TPA方法计算激振点的瞬态冲击载荷。结果表明，具有更多离散传递路径的模型可以提供更多从激励源到目标的传递信息，并且在模拟结果和实验记录之间具有更大的均方根误差（RMSE）。然而，具有大量传输路径的模型对于实验来说将是耗时的。此外，实施了玻璃运行通道后部的改进设计，并且激发点和目标之间的 FRF 大小已显着降低。